MESON Chess Problem Database

Problem Display
PID: 271248 (1b1Bb3/2p2Rn1/3k4/3P1P2/B1P2Ppq/1N1K2p1/7p/3Q4 w - - 0 1)

Pickering, AS

Sunday Referee, 1932

(First published on Sun Dec 4 1932)

1b1Bb3/2p2Rn1/3k4/3P1P2/B1P2Ppq/1N1K2p1/7p/3Q4

#2

10 + 9

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Qe7
      • 2.Bxe7#
    • 1...Qh3
      • 2.Be7#
    • 1...Qh5
      • 2.Be7#
    • 1...Qh6
      • 2.Be7#
    • 1...Qh7
      • 2.Be7#
    • 1...Qh8
      • 2.Be7#
    • 1...Ba7
      • 2.Bxc7#
    • 1...Bd7
      • 2.Rxd7#
  • Tries
    • 1.Ke2?
      • threat
        • 2.c5#
      • 1...Qe7+
        • 2.Bxe7#
      • 1...Ba7
        • 2.Bxc7#
      • 1...Se6
        • 2.dxe6#
      • 1...c5
        • 2.dxc5 ep#
      • 1...Bb5!
    • 1.Kc3?
      • threat
        • 2.c5#
      • 1...Ba7
        • 2.Bxc7#
      • 1...Se6
        • 2.dxe6#
      • 1...c5
        • 2.dxc5 ep#
      • 1...Qf6+!
    • 1.Sc5?
      • threat
        • 2.Se4#
        • 2.Sb7#
      • 1...h1Q
        • 2.Sb7#
      • 1...h1B
        • 2.Sb7#
      • 1...Qe7
        • 2.Sb7#
        • 2.Bxe7#
      • 1...Bc6
        • 2.Se4#
      • 1...Kxc5!
    • 1.Rf6+?
      • 1...Se6
        • 2.Rxe6#
      • 1...Qxf6!
    • 1.Qe2?
      • threat
        • 2.Qe5#
      • 1...Qe7
        • 2.Bxe7#
        • 2.Qxe7#
      • 1...Qf6!
    • 1.Qa1?
      • threat
        • 2.Qe5#
      • 1...Qe7
        • 2.Bxe7#
      • 1...Qf6!
    • 1.Qe1?
      • threat
        • 2.Qe5#
      • 1...Qe7
        • 2.Bxe7#
        • 2.Qxe7#
      • 1...Qf6!
  • Keys
    • 1.Kc2!
      • threat
        • 2.c5#
      • 1...Ba7
        • 2.Bxc7#
      • 1...Se6
        • 2.dxe6#
      • 1...c5
        • 2.dxc5 ep#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • Q(d);N_GUARD::B(J),XQ(d)
    • Q(d);N_GUARD::B(J)
    • Q(d);N_GUARD,P_PINP(H)::B(J)
    • B(h);N_GUARD::B(J),XP(f)
    • B(i);N_GUARD::R1(I),XB(i)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • P(E)
      • Vars
        • Q(d);CHECK,N_GUARD::B(J),XQ(d)
        • B(h);N_GUARD::B(J),XP(f)
        • S(g);OGATE::QAR(A)+P(G),XS(g)
        • P(f);OGATE::QAR(A)+P(G),XP(f),EP
      • Refutation
        • B(i);P_PINP(E)
    • Try
      • K(C);P-FLIGHT
      • Threat
        • P(E)
      • Vars
        • B(h);N_GUARD::B(J),XP(f)
        • S(g);OGATE::QAR(A)+P(G),XS(g)
        • P(f);OGATE::QAR(A)+P(G),XP(f),EP
      • Refutation
        • Q(d);CHECK
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);::S(B)
        • B(i);::S(B)
      • Refutation
        • K(e);S_FLIGHT,XS(B)
    • Try
      • R(I);CHECK
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::R1(I),XS(g)
      • Refutation
        • Q(d);XR(I)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • Q(d);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • Q(d);N_GUARD::B(J),XQ(d)
      • Refutation
        • Q(d);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • Q(d);
  • Actual
    • K(C);S_FLIGHT
    • Threat
      • P(E)
    • Vars
      • B(h);N_GUARD::B(J),XP(f)
      • S(g);OGATE::QAR(A)+P(G),XS(g)
      • P(f);OGATE::QAR(A)+P(G),XP(f),EP
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